![background image](http://html1.mh-extra.com/html/viewsonic/vg810b/vg810b_service-manual_1021231027.webp)
6.2
No display on screen (Screen is black, LED is off).
AC power on and DC power on
no picture
LED is off
Check that C255 positive is at 5V
Check that the voltage level of
CN251 is approximately 12V
Power board failure
IC251 failure
Check CN302 pin8 is
12V, pin3 is 5V
1. Check Q309, Q310 pin.
2. Check FB315, FB316
Inverter failure
Yes
Yes
Yes
Yes
No
No
No
24
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
VG810s/b
Содержание VG810B
Страница 30: ...6 6 Figure of Waveform 27 ViewSonic Corporation Confidential Do Not Copy VG810s b...
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Страница 53: ...10 Schematic Diagrams 50 ViewSonic Corporation Confidential Do Not Copy VG810s b...
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Страница 63: ...11 PCB Layout Diagrams 60 ViewSonic Corporation Confidential Do Not Copy VG810s b Main Board...
Страница 64: ...61 ViewSonic Corporation Confidential Do Not Copy VG810s b Main Board...
Страница 65: ...62 ViewSonic Corporation Confidential Do Not Copy VG810s b Power Board...
Страница 66: ...63 ViewSonic Corporation Confidential Do Not Copy VG810s b Control Board...